<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .a {
      border: 1px solid red;
      width: 90%;
      height: 200px;
      padding: 0 10px;
      /* overflow: visible;
      white-space: normal;
      word-break: break-all; */
      /* text-align: left; */
      display: flex;     
      flex-direction: column;
      justify-content: center;
    }

    .b {
      border: 1px solid blue;
      display: flex;
      flex-direction: row;
      align-items: center;
    }

    .c{
      border: 1px solid deeppink;
      width: 10%;
      height: 300px;
      word-break: break-all;
    }
  </style>
</head>
<body>
  <div class="b">
    <div class="a">
      都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假都快放假
    </div>
    <div class="c">
      <span>
        afkhdskfjhkadjhfkfjhkadkfjhkadjhfkkfjhkadjhfkjhfkkkfjhkadjhfkkfjhkadjhfkkfjhkadjhfkfjkfjhkadjhfkkfjhkadjhfkkfjhkadjhfkkfjhkadjhfkhkadjhfkkfjhkadjhfkkfjhkadjhfkkjhaf
      </span>
    </div>
  </div>
</body>
</html>